Katekyohitmanrebornfanfic Stories

Deep in an underground facility in Japan, there is an operation called "Operation Enhance" where Japanese scientists do experiments on human beings, making them stronger, faster. These experiments are inhumane, torturing each subject until death. Thousands have died for their experiments. They were successful, but before they could reveal this secret the facility was raided by the U.S. With everything destroyed, the scientists were executed. They thought they had failed. They were wrong.

(Y/N) was raised to be a hitman at a young age. She is the second best hitman in the world, right under Reborn. She travelled far and wide with her partner, Spade, a wolf. She received a summoning slip to go to the tallest mountain in the world. Finally, she arrived at the peak to find that there was no one there. Suddenly a blinding light shone, (Y/N) almost falling off the mountain if it wasn't for her partner who stopped her fall. Then the light dimmed. It took a bit for (Y/N) to gain her eyesight back, but when she did, everything seemed larger, even her partner, Spade. She found a nearby puddle only to find herself as a baby. (Y/N) didn't really mind her Arcobaleno form actually, but she was curious about it. She began her travels again and was told that there were 7 other babies around the world, similar to her. They were considered the 7 strongest babies, but now, there were eight.